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9620 Professional OBD II Scan Tool 15
2.3.6 View Freeze Data
When an emission-related fault occurs, certain vehicle conditions are recorded by the
on-board computer. This information is referred to as a Freeze Frame data. The information
is a snapshot of operating conditions at time of a fault. This data can be overwritten by
faults with a higher priority.
NOTE: If codes were erased, then freeze frame data may not be stored in vehicle memory.
Select View Freeze Data from the OBDII Function
List and press ENTER.
The scan tool links to the vehicle and displays
Freeze Frame data. Use UP/DOWN arrow keys
to scroll through data.
NOTE: If more than one computer module respons
with freeze fram data, then the frame num-
ber and module display on the first line.
Press the LEFT/Right key to change mod-
ules.
When done, press BACK key to return to OBDII Function List.
2.3.7 O2 Monitor Test
NOTE: The O2 Monitor Test is NOT AN ON-DEMAND TEST. O2 sensors are NOT tested
when selected via the menu. The O2 sensors are tested when engine operating
conditions are within specified limits.
OBD II regulations require that applicable vehicles monitor and test the oxygen (O2)
sensors to determine problems related to fuel and emissions. The O2 Monitor Test
allows retrieval of completed O2 sensors monitor test results.
O2 sensors are located before (upstream) and after (downstream) catalyst(s). The
sensors are named (xy) for their position relative to both cylinder banks and catalysts.
The O2 sensor for cylinder bank 1 has the prefix 1y while the O2 sensor for
cylinder bank 2 has the prefix 2y.
The O2 sensor upstream of the catalyst (closest to the engine) has the suffix x1
while the O2 sensor downstream of the catalyst has suffix x2. If vehicle contains
more catalysts, the O2 sensor downstream of the second catalyst has the suffix
x3 and the O2 sensor downstream of the next catalyst has the suffix x4.
For example, O2S 21 is the upstream O2 sensor for cylinder bank 2.
The following O2 sensor tests are available:
Rich to Lean sensor threshold voltage
Lean to Rich sensor threshold voltage
Low sensor voltage for switch time
High sensor voltage for switch time
FREEZE FRAME DATA
TROUB CODE P0443
CALC LOAD(%) 85.6[
ENGINE(RPM)($10) 1120
OBDII Function List |
4)Erase Codes ]
5)View Data [
`6)View Freeze Data
FRAME 1 Mod $1A
TROUB CODE P0443
CALC LOAD(%) 85.6[
ENGINE(RPM)($10) 1120
22 9620 Professional OBD II Scan Tool
Example:
P0101 - Mass or Volume Air Flow
Circuit Range/Performance Problem
P 0 1 0 1
Powertrain Codes
P0xxx - Generic (SAE)
P1xxx - Manufacturer Specific
P2xxx - Generic (SAE)
P30xx-P33xx - Manufacturer Specific
P34xx-P39xx - Generic (SAE)
Chassis Codes
C0xxx - Generic (SAE)
C1xxx - Manufacturer Specific
C2xxx - Manufacturer Specific
C3xxx - Generic (SAE)
Body Codes
B0xxx - Generic (SAE)
B1xxx - Manufacturer Specific
B2xxx - Manufacturer Specific
B3xxx - Generic (SAE)
Network Communication Codes
U0xxx - Generic (SAE)
U1xxx - Manufacturer Specific
U2xxx - Manufacturer Specific
U3xxx - Generic (SAE)
Bx - Body
Cx - Chassis
Px - Powertrain
Ux - Network Comm.
x = 0, 1, 2 or 3
Vehicle Specific System
Specific Fault Designation
Section 3: Diagnostic Trouble Codes (DTC)
3.1 DTC Format
Diagnostic Trouble Codes (DTCs) consist of a five-digit alphanumeric code. The DTC
format and types are shown below. When the on-board computer recognizes and identifies
a problem, a DTC for that fault is stored in memory. These codes are intended to help you
determine the root cause of a problem.
J2012 and ISO 15031-6 are standards for all DTCs, established by SAE, International
Organization for Standardization (ISO) and other governing bodies. Codes and definitions
assigned by this specification are known as Generic OBD II codes. OBD II requires
compliance with standards, and has made it standard for all cars, light trucks, APVs,
MPVs, and SUVs sold in U.S. Codes not reserved by SAE are reserved for manufacturer
and referred to as Manufacturer Specific.
Periodically, new DTCs are defined and approved by SAE, ISO and other governing
bodies. The scan tool software will be periodically updated to reflect these changes. For
more information regarding DTC updates, please call our Technical Support line at
1-800-228-7667 (8:00 6:00 EST Monday Friday), or send an email to
tech_support@actron.com.